XMD and xilmfs help

Hello,

I have a board with 256M of RAM and a V2P30.  Designed a simple system
in EDK with the RAM partitioned into 2 equal parts.  Compiled a .elf to
live in one half and want to use the other half for a filesystem.  The
.elf runs fine in the sense that I get the "Usage: " message from it
via the UART when it realizes it doesn't have any input files.  I have
trouble when I try and incorporate the filesystem.  I am using xilmfs
so I generated a .mfs with a couple dummy files in it.  Now if I use
XMD to first download the elf, it works fine (as described above -- I
can run it over and over again)  but when I download the .mfs, it
ceases to work ('run' produces nothing via stdout -- I think it is
spinning somewhere in a few lines of code).  I am careful about the
address supplied to the 'dow' command and am using the -data flag.  A
wierd effect of the .mfs download is that the pc is reset to 0x0000cfd4
instead of to 0xfffffffc when I type 'run' at XMD prompt.  Trying to
set the pc manually doesn't help ('rwr' then 'con').  I get the feeling
that the .elf is getting stomped by the .mfs even though it really
doesn't know anything about that region of memory (I am pretty sure I
got the linker script right).

I could easily babble quite a bit more about this, but will leave it
here.  If any further info would help you help me, let me know!  I
appreciate any advice...

Joey

Well, I got over this problem.  Now if anyone knows how to use XMD to
get xilmfs files/filesystems back out of the RAM after my embedded
program has run, I would love to hear about it.

Joey